866 TamaGotThis

866 : TamaGotThis

Design render

How it works

The project implements a tamagotchi: a cat is born on startup and is to be kept alive.

  • If the cat does not sleep, play or eat for an extended period of time, its battery decreases, the battery can be increased again by performing these actions.
  • If the cats battery is empty, it loses one of its nine lives.
  • If no lives remain, the tamagotchi reboots completely.

Interacting with the tamagotchi is done using a gamepad:

  • The X, Y, A and B buttons are used to transition to the 'play', 'sleep', 'eat' and 'default' state respectively.
  • The 'left', 'right', 'up' and 'down' keys can be used in the 'eat' state to catch fish, catch three fish to increase the battery.
  • Letting the cat sleep or play for an extended amount of time allows it to increase its battery again. Feedback is given to the user through a VGA screen and an audio output.

How to test

The tamagotchi can be used by attaching a gamepad, VGA screen and audio module. In order to reset the tamagotchi, pull the rst_n low for a while. When the rst_n is high again, the screen should flash colorfully as the the cat is born. After this process, the tamagotchi is in a 'default' idle state. Use the buttons on the gamepad to traverse states (remember to go back to the default state before trying to enter a new state), discover the fish-catching minigame and keep the cat alive.

If the 'A' button is pressed while 'select' is pressed, the tamagotchi enters a 'fast' mode where the battery increases and decreases quicker, making testing easier.

External hardware

Gamepad, VGA and Audio PMODs.

IO

#InputOutputBidirectional
0R1
1G1
2B1
3VS
4gamepad_pmod_latchR0
5gamepad_pmod_clkG0
6gamepad_pmod_dataB0
7HSAudioPWM

Chip location

Controller Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Analog Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Analog Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux tt_um_chip_rom (Chip ROM) tt_um_factory_test (Tiny Tapeout Factory Test) tt_um_teuscher_eml_fabric (EML Fabric — analog exp/ln compute cells) tt_um_wokwi_465656663515438081 (Convert binary to hex on 7 segments) tt_um_nikita_face_detect (FPGA Face Detection) tt_um_obstacle_avoider (Obstacle Avoider State Machine) tt_um_poket_animal (Poket Animal) tt_um_drewbabel_uart (Configurable FIFO-buffered UART with APB CSR) tt_um_wokwi_469163916296039425 (TT Workshop Test) tt_um_jonahsaunders_slsvga (tt_um_jonahsaunders_slsvga) tt_um_fatigue_monitor (Fatigue Monitor (PPG Pulse-Interval Variability)) tt_um_vedam_dual_port_ram (Dual Port RAM) tt_um_wokwi_469739097665887233 (Tiny Tapeout Template Copy) tt_um_spdif_to_i2s_kilpelaj (S/PDIF to I2S receiver) tt_um_morse_converter (ASCII to Morse Code Converter) tt_um_wokwi_469806914724000769 (Spin, Text and VGA) tt_um_wokwi_469701770572338177 (TinyTapeout) tt_um_garnetkoebel_communotron (Communotron) tt_um_wokwi_469449970323169281 (full adder) tt_um_duzabf_2026_ow (A WIP Online Workshop 2026 project) tt_um_wokwi_469807513638180865 (Tiny Tapeout NAK) tt_um_ttsky26c_oguz (ttsky26c-202607-mehmetoguzderin by Oguz) tt_um_kashif_fp4_sparse_tpu (FP4 Sparse Mini-TPU) tt_um_moein_maleki_arm16 (arm16) tt_um_wokwi_469453454643027969 (ON Check System) tt_um_felixcheng_neural_core (Neural Compute Core (V0.15)) tt_um_wokwi_469788774011248641 (Spin Display - select-reset-reverse) tt_um_wokwi_469449443070765057 (Samuel's first chip) tt_um_wokwi_469449007236383745 (testinttrsv01) tt_um_vga_ca (VGA cellular Automaton) tt_um_dosci_500hz (Digital Oscillator 500 Hz) tt_um_wokwi_469747443569078273 (XOR test project - Tiny Tapeout workshop) tt_um_wokwi_469585758593419265 (spinner) tt_um_fp16_mac (FP32 Math Unit) tt_um_1DC_vga_dyoa (VGA Design Your Own ASIC) tt_um_haydenevans_top (Systolic Processing Element) tt_um_wokwi_469806252715961345 (TT_Proj_SA) tt_um_wokwi_469448996577604609 (Tiny Tapeout - Reto) tt_um_ehofmannbr_pmodvga_06 (VGA Color Tiles) tt_um_lfglabs_lsc1u (leanSilicon LSC-1 Micro arithmetic kernel) tt_um_wokwi_469804280240495617 (Zetterling SRAM) tt_um_wokwi_469806066852696065 (TileTestchase) tt_um_wokwi_469449118072978433 (binary_add_v1) tt_um_voltage_amplifier_neuron (Voltage Amplfier Neuron) tt_um_wokwi_469449686545956865 (Tiny Tapeout Template Copy_JinoShiono) tt_um_wokwi_469448887171240961 (Tiny Tapeout - Mini CORDIC) tt_um_wokwi_469809033878555649 (Tiny Tapeout Yummy Chip - bgianfo) tt_um_sirajmuhammad_bpsk_mod (BPSK Baseband Modulator) tt_um_K_coder_9 (TENs device frequency controller) tt_um_wokwi_469758119198926849 (LL_6BitShiftRegister_ToggleEnabledFeedback) tt_um_Asaadkhex_6x6u (6x6 UART Bussbar Switch) tt_um_wokwi_469809198944364545 (tt8-8bit-cpu Copy) tt_um_wokwi_469710279607305217 (Tiny Tapeout Submission KL - SiliDize) tt_um_wokwi_469629799092815873 (2:1 Mux with differential outputs) tt_um_poundbrad_reciprocal_counter (Two-Channel Reciprocal Counter) tt_um_joonatanalanampa_cordic (CORDIC-1) tt_um_x4ntha_nova (Data General Nova 1200 CPU) tt_um_quick_bus (quick_bus) tt_um_wokwi_470058539448408065 (Nigel's Tiny Tapeout Project) tt_um_wokwi_470058244557293569 (Tiny Tapeout Kabisan) tt_um_wokwi_470058241869790209 (Abdi's desgin) tt_um_wokwi_470060107756808193 (Sukhraj Deol's Chip) tt_um_wokwi_470058578588614657 (The Chip of Master George Stead) tt_um_wokwi_470069286344622081 (Tiny Tapeout ISHA) tt_um_ucl_display (Flashing... lights) tt_um_wokwi_470058746279043073 (Arihant's first Wokwi design) tt_um_wokwi_470060103260512257 (Tiny Tapeout Jabriel Copy) tt_um_wokwi_470069460157662209 (haadi's tiny tapeout) tt_um_wokwi_470058418706939905 (Kitty) tt_um_wokwi_470058490118136833 (Iris) tt_um_wokwi_470060098828179457 (Temz_ tiny tapeout) tt_um_wokwi_470058023187099649 (Osman WOKWI project 1) tt_um_wokwi_470057988621827073 (Viraj Tiny Template Full Adder TEST) tt_um_wokwi_470069802034377729 (Tiny Tapeout Template Copy) tt_um_wokwi_470070136685362177 (full adder) tt_um_wokwi_470070449402211329 (Anastasia Copy (2)) tt_um_wokwi_470059864883484673 (Keyaan’s first Wokwi design) tt_um_wokwi_470071200164912129 (full adder tiny tapeout Copy) tt_um_wokwi_470060671178857473 (SBUSixth First Chip Design Mentored by Tiny Tapeout) tt_um_wokwi_470099562753182721 (Isaac Tiny Tapeout) tt_um_wokwi_470120538476737537 (efwz8voices) tt_um_lelo_gr01_analogicus (LELO-GR01) tt_um_lelo_gr04_analogicus (LELO-GR04) tt_um_lelo_gr02_analogicus (LELO-GR02) tt_um_pump_out (60 Hz RMS Pump-Out Controller) tt_um_urish_simon (Simon Says memory game) tt_um_lelo_gr03_analogicus (LELO-GR03) tt_um_wokwi_470299374901578753 (Shrimp) tt_um_vga_clock (VGA clock) tt_um_frequency_counter (Frequency counter) tt_um_z2a_rgb_mixer (RGB Mixer demo) tt_um_mattvenn_r2r_dac_3v3 (Analog 8 bit 3.3v R2R DAC) tt_um_rebeccargb_universal_decoder (Universal Binary to Segment Decoder) tt_um_rebeccargb_hardware_utf8 (Hardware UTF Encoder/Decoder) tt_um_rebeccargb_intercal_alu (INTERCAL ALU) tt_um_rebeccargb_vga_pride (VGA Pride) tt_um_ogggggish_ota_ldo (SSF Capless LDO) tt_um_hariri4534_audioplayback (audioplayback) tt_um_wokwi_470637150792846337 (Joni - Tiny Tapeout Teardown2026 Workshop) tt_um_wokwi_470635013242210305 (Tom's first Wokwi design) tt_um_wokwi_470635780983408641 (Tiny Tapeout-AyeshaTeardown26) tt_um_wokwi_470639152626282497 (KeKoaM Tiny Tapeout) tt_um_wokwi_470637073520124929 (Tiny Tapeout workshop) tt_um_toby43479_iox (IO Expander with PWM) tt_um_wokwi_470635764113915905 (Divider Demo) tt_um_wokwi_470635580461052929 (Mann-teardown-project) tt_um_wokwi_470639672984256513 (KCs 001 TinyTapeout Design) tt_um_wokwi_470635507665754113 (Tiny Tapeout Template Copy) tt_um_wokwi_470637047364443137 (Pixel-Curio-Chip) tt_um_terihear_tinytearout (TinyTearout) tt_um_wokwi_470643025042834433 (TT 2026) tt_um_wokwi_470637360757626881 (Tiny Tapeout Template Copy) tt_um_wokwi_470635627278929921 (Tiny Tapeout Workshop) tt_um_wokwi_474471160110403585 (Cylon-Scanner) tt_um_wokwi_470646659230201857 (bloopbloop) tt_um_pthomas_sigma_delta (Continuous-Time Sigma-Delta ADC (1st order)) tt_um_sky_tpu_3x3 (Sky TPU 3x3) tt_um_tpcannon7_fir (tinyfir) tt_um_bruniliomuy_top (Fir_Filter) tt_um_semiqa_diff_opamp (Diff-In-Diff-Out-OpAmp) tt_um_TinyProcessor_naiyar_ (TinyProcessor) tt_um_CCDmos3D (ADC for CCDmos3D pixel) tt_um_snn_lif_neuron (snn_lif_neurons) tt_um_galaguna_NanoSys_fit (Nano-120_CPU@ler.uam.mx) tt_um_rowles_regime (Single-Bit Macro Regime Classifier) tt_um_rowles_fedmodel (The Fed Model (F1/F2)) tt_um_sky26c (tt_sky26c) tt_um_aka_regfile_ecc (regfile_ecc) tt_um_fwilson12_mac (int8 MAC) tt_um_davidbroughsmyth_ecg_sar12 (heart_monitor_adc_art) tt_um_foxworks_picorv32 (TCD Foxworks PicoRV32) tt_um_saltworks_ndf_c32 (Neural dataflow fabric — bit-serial MAC cells on a self-routing switch) tt_um_yjeum11 (DTMF (Touch-Tone) decoder) tt_um_vedic_mult (4-bit Vedic Multiplier) tt_um_atx_phased_interferometer (Acoustic Interferometer) tt_um_tilesos_dual_adc (Dual-Path Noise-Shaping ADC) tt_um_darga_cirom (Darga CiROM digital read + ternary MAC) tt_um_azara_cirom (Azara CiROM ternary read) tt_um_spi_reg_bank (8-bit Modified RISC-V) tt_um_aialaqili_updown_counter (4-bit Up/Down Counter) tt_um_noahzperez29_riscv_core (Noah RISC-V Core) tt_um_fp8_fpu (FP8 (E4M3) Floating-Point Unit) tt_um_costinemanuelv_gps_daily_trigger (GPS Daily Trigger) tt_um_ja_achtung_1x1 (JA Achtung Compact) tt_um_ja_achtung_1x2 (JA Achtung Full) tt_um_pwm_spice (spice-pwm-tapeout) tt_um_wecallemjazzyfact_bgr_ldo (BGR + LDO 3.3V/1.8V Integrated IP) tt_um_lelo_temp_wulffern (LELO-TEMP) tt_um_wokwi_472389622799861761 (3-Bit 101 Pattern Detector) tt_um_LnL_SoC (Lab and Lectures SoC) tt_um_dash_lucas_risc (risc_processor) tt_um_serdes_ephotonics (UCIe-style SERDES with analog TX driver & RX slicer) tt_um_joram200 (Kalman Filter Hardware Accelerator) tt_um_colbywonn_poly_synth (Poly Synth v1.0) tt_um_nobleg30_uart_vga_scroller (UART VGA Text Scroller) tt_um_multi_precision_mult (Multi-Precision Multiplier) tt_um_pratibha_munnangi_qkt_mac (QKT MAC Accelerator) tt_um_akankaan_bf16_fma (BF16 Fused Multiply-Add (FMA)) tt_um_rtfce (RTFCE - 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