No mcu distance meter
About the No mcu distance meter PCB
No mcu distance meter is an open source PCB design by AlexIII, published on GitHub. It is a 2-layer board measuring 99.6 × 42.7 mm, with 33 components from 21 distinct parts.
Other key parts include the CD4060BE, 74HC00, 74HC590A, 27C512 and LM78L05_TO92. By type, the board carries 13 resistors, 9 capacitors, 5 ICs, 2 connectors, 2 switches and 1 diode.
From the project
A Distance Meter that uses no MCU
A Distance Meter that uses no MCU. Bases on ultrasonic ranging module HC-SR04.
The schematic employs just three standard logic ICs (8-bit counter, divider/oscillator, quad NAND) and a ROM chip (acts as a binary-to-decimal converter).
- no-mcu-distance-meter-kicad5-prj/ - KiCAD 5.1 project with the schematic and PCB design - eprom-programmer - Arduino sketch to program the ROM chip using mega2560 (see the sketch for the connections info).
Main components on the No mcu distance meter
No mcu distance meter bill of materials (BOM)
33 components, 21 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CD4060BE | DIP-16_W7.62mm | U1 |
| 1 | 74HC00 | DIP-14_W7.62mm | U2 |
| 1 | 74HC590A | DIP-16_W7.62mm | U3 |
| 1 | 27C512 | DIP-28_W15.24mm | U4 |
| 1 | LM78L05_TO92 | TO-92_Inline_Wide | U5 |
| 1 | Conn_01x04 | Pin_Header_Angled_1x04_Pitch2.54mm | J1 |
| 1 | Conn_01x02 | Pin_Header_Straight_1x02_Pitch2.54mm | J2 |
| 1 | 47k | Potentiometer_Trimmer_ACP_CA6v_Horizontal | RV1 |
| 1 | SW_SPDT | SK-12F14 | SW1 |
| 1 | SW_Push | SW_PUSH_6mm | SW2 |
| 1 | FYT-3631 | FYT-3631 | D1 |
| 1 | 1n | C_Disc_D3.0mm_W1.6mm_P2.50mm | C1 |
| 1 | 68n | C_Disc_D3.0mm_W1.6mm_P2.50mm | C2 |
| 1 | 4.7n | C_Disc_D3.0mm_W1.6mm_P2.50mm | C3 |
| 6 | 100n | C_Disc_D3.0mm_W1.6mm_P2.50mm | C4, C5, C6, C7, C8, C9 |
| 1 | 47k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 20k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 4.7k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 7 | 470 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6, R7, R8, R9, R11, R12 |
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| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10, R13 |
No mcu distance meter design files
The KiCad project lives in the AlexIII/no-mcu-distance-meter repository on GitHub; these links point at the commit this page was built from.
No mcu distance meter: common questions
How big is the No mcu distance meter PCB?
The No mcu distance meter measures 99.6 × 42.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the No mcu distance meter?
33 components, from 21 distinct parts. The full bill of materials is listed on this page.
Where can I download the No mcu distance meter design files?
From the AlexIII/no-mcu-distance-meter repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the No mcu distance meter design in my own project?
The repository has no license, so all rights stay with AlexIII. Use it as a reference, and ask the author before reusing the design.