Description
The PCB we have designed contains two circuits. The first, which is located at the top of the schematic, is a power distribution circuit. It has a 24 V input, which is split into a 24 V output, and two USB ports which can each supply up to 5 V.
The second circuit serves to step down a 24 V PWM signal to a 5 V PWM signal that is standard with most micro servos. This gives us the functionality to control the servo that unlocks and locks the user door using the ClearCore I/O controller that we have purchased for use with the pneumatic system.
Schematic
Layout
Bill of Materials
| Vendor part number | Quantity (To Order) | Value | Part Designator(s) | Vendor |
| 839-54-00255CT-ND | 2 | 54-00255 | J1, J2 | DigiKey |
| F6094-ND | 2 | 0PTF0078P | F1, F2 | DigiKey |
| F4710-ND | 1 | 0233007.MXP, 7 A | Fuse, for F1 | DigiKey |
| F2684-ND | 1 | 0235005.HXP, 5A | Fuse, for F2 | DigiKey |
| 811-2361-ND | 1 | UWS-5/10-Q48N-C | 24V_TO_5V_DCDC | DigiKey |
| 1N4733AFS-ND | 1 | 1N4733A | CR1 | DigiKey |
| SAM1111-03-ND | 2 | TS-103-G-A | SV1, SV2 | DigiKey |
| 1189-1894-ND | 1 | 10 uF | C1 | DigiKey |
| 732-8663-1-ND | 1 | 33 uF | C5 | DigiKey |
| CF14JT1K00TR-ND | 1 | 1K | R1 | DigiKey |
| 609-4413-ND | 2 | 87583-2010BLF | J3, J4 | DigiKey |