417 Abacus Lock

417 : Abacus Lock

Design render

How it works

Abacus Lock is a digital combination lock that can be used in various projects. It moves the servo only when a specific sequence of switches is set. An LED Bar displays the status of the current lock combination in binary.

How to test

Follow Wokwi design and run the .ino file using Arduino: https://wokwi.com/projects/408154128142306305

External hardware

LED, LED Bar, Servo, Arduino Nano

This project was sponsored by The MITRE Corporation and MIT/LL Beaverworks Summer Institute

IO

#InputOutputBidirectional
0IN1OUT1
1IN2OUT2
2IN3OUT3
3IN4OUT4
4IN5OUT5
5IN6OUT6
6IN7OUT7
7IN8OUT8

Chip location

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experiments with latch-based shift registers) tt_um_rejunity_vga_test01 (VGA Drop (audio/visual demo)) tt_um_silice (Warp) tt_um_wokwi_408231820749720577 (Abacus Lock) tt_um_jayjaywong12 (mulmul) tt_um_emmyxu_obstacle_detection (Obstacle Detection) tt_um_neural_navigators (Neural Net ASIC) tt_um_a1k0n_nyancat (VGA Nyan Cat) tt_um_rebeccargb_styler (Styler) tt_um_resfuzzy (resfuzzy) tt_um_cejmu (CEJMU Beers and Adders) tt_um_16_mic_beamformer_arghunter (16 Mic Beamformer) tt_um_pdm_pitch_filter_arghunter (PDM Pitch Filter) tt_um_pdm_correlator_arghunter (PDM Correlator) tt_um_ddc_arghunter (DDC) tt_um_i2s_to_pwm_arghunter (I2S to PWM ) tt_um_georgboecherer_vco (Analog Voltage Controlled Oscillator) tt_um_supermic_arghunter (Supermic ) tt_um_dmtd_arghunter (DMTD ) tt_um_htfab_bouncy_capsule (Bouncy Capsule) tt_um_samuelm_pwm_generator (PWM generator) tt_um_mattvenn_analog_ring_osc (Ring Oscillators) tt_um_toivoh_demo_deluxe (Sequential Shadows Deluxe [TT08 demo competition]) tt_um_faramire_stopwatch (Simple Stopwatch) tt_um_micro_tiles_container_group2 (Micro tile container (group 2)) tt_um_johshoff_metaballs (Metaballs) tt_um_top (Flame demo) tt_um_NicklausThompson_SkyKing (SkyKing Demo) tt_um_Electom_cla_4bits (4-bit CLA) tt_um_vga_cbtest (Generate VGA output for Color Blindness Test) tt_um_zoom_zoom (Zoom Zoom) tt_um_dpmunit (DPM_Unit) tt_um_clock_divider_arghunter (Clock Divider ) tt_um_dlmiles_poc_fskmodem_hdlctrx (FSK Modem +HDLC +UART (PoC)) tt_um_emilian_muxpga (TinyFPGA resubmit for TT08) tt_um_pyamnihc_dummy_counter (Dummy Counter) tt_um_whynot (Why not?) tt_um_sudana_ota5t_1 (5-T OTA) tt_um_dlmiles_tt08_poc_uart (UART) tt_um_dendraws_donut (donut) tt_um_wokwi_408237988946759681 (Counter) tt_um_tmkong_rgb_mixer (RGB Mixer) tt_um_bgr_agolmanesh (Bandgap Reference) tt_um_z2a_rgb_mixer (RGB Mixer demo) tt_um_vga_clock (VGA clock) tt_um_synth_simple_mm (synth_simple) tt_um_gus16 (GUS16 CPU) tt_um_rejunity_ternary_dot (Ternary 128-element Dot Product) tt_um_virantha_enigma (Enigma - 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Optimized Dino) tt_um_Qwendu_spi_fpu (SPI FPU) tt_um_rte_eink_driver (E-ink display driver) tt_um_urish_sic1 (SIC-1 8-bit SUBLEQ Single Instruction Computer) tt_um_kianV_rv32ima_uLinux_SoC (KianV uLinux SoC) tt_um_autosel (I2C EEPROM Project Selection) tt_um_tnt_rom_test (TT09 SKY130 ROM Test) tt_um_tnt_rom_nolvt_test (TT09 SKY130 ROM Test (no LVT variant)) tt_um_tt_tinyQV (TinyQV SoC with additional peripherals) tt_um_htfab_dg_dac (Dempsey-Gorman DAC) tt_um_algofoogle_raybox_zero (raybox-zero TTCAD25a edition) tt_um_htfab_checkers (Overengineered Checkers) tt_um_sky130_as_sc_hs (sky130_as_sc_hs test) tt_um_sky130_as_sc_hs_dyn_test (sky130_as_sc_hs dyn test) tt_um_rejunity_z80 (Zilog Z80) tt_um_tnt_rf_yolo_test (TTCAD25a SKY130 RF YOLO Test) tt_um_2x2MatrixMult_Vort3xed (UART Matrix Multiplier) tt_um_zerotoasic_logo_screensaver (VGA Screensaver with Zero to ASIC Logo) tt_um_rejunity_lgn_mnist (LGN hand-written digit classifier (MNIST, 16x16 pixels)) tt_um_wokwi_422192563267712001 (Padlock) tt_um_rc_oscillators (R-C Oscillators) tt_um_tnt_ff_yolo_test (TTCAD25a SKY130 FF YOLO Test) Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available