PCBA Info

The project consists of a case (8 parts) and a board (1 part) for the electronics.

The case is made of coloured PCB material and consists of the “front” (Gerber_Front_20200228004727), 6 pieces of the “wall” (Gerber_Wall_20200228004853) and the “backplate” (Gerber_BackPlate_20200228005103). The front is soldered to the 6 wall pieces to form the “cover”. Pin headers (2×1) are used to keep the cover and the backplate together.

The backplate has 4 soldered nuts (or SMTSO standoffs) to hold the board and 2 pin header connectors (4×1) for an additional sensor board. The case will be available in 2 colours for 2 models. One model is white. Another model is black.

The board (Gerber_ONE-iP_20200228005251) is entirely with THT components. A female pin header connector (4×1) is at the bottom. The rest of the components are on the top side. 2 interchangeable power supply components are used to produce 2 models of the same PCB depending on region (US, EU).

Gerber Files

Other Files

PCB Specifications

Board

Layers: 2
PCB Thickness: 1.6mm
PCB Color: Blue
Silkscreen: White
Surface Finish: LeadFree HASL-RoHS
Copper Weight: 1oz
Test: Full Automatic Optical Test

Backplate

Layers: 1
PCB Thickness: 2mm
PCB Color: Black/White on both sides (depending on model)
Silkscreen: White
Surface Finish: LeadFree HASL-RoHS
Copper Weight: 1oz
Test: Full Automatic Optical Test

Front

Layers: 1
PCB Thickness: 1.6mm
PCB Color: Black/White on both sides (depending on model)
Silkscreen: White
Surface Finish: LeadFree HASL-RoHS
Copper Weight: 1oz
Test: Full Automatic Optical Test

Wall

Layers: 1
PCB Thickness: 1.2mm
PCB Color: Black/White on both sides (depending on model)
Silkscreen: White
Surface Finish: LeadFree HASL-RoHS
Copper Weight: 1oz
Test: Full Automatic Optical Test

BOM

Board

NameDescriptionQtModelDigikeyMouserLink
PCBGerber_ONE-iP_202002280052511
PiPin header – female 2×201S6104-NDeBay
ResetPin header – female 2×21SAM1212-02-ND eBay
RESETSPST Momentary Push Button Tactile Right Angle 6x6mm1EG2509-NDeBay
LCDLCD IDC Socket – male 2×13 – length: 15mm1Similar to attached specs file but with tighter wall around the pins to not allow wrong positioning of the female 1-pin left or right. See specs in “Other Files” section: LCD IDC Socket BX25-88XXSXXXBND1X1.pdf
K1-K4Solid State Relay4OMRON G3MB-202PZ909-NDeBay
BME280Pin header – female right angle 4×11eBay
PSU-US7-36V AC to 5V/3A(MAX) DC converter (US model)1IPS-ATD24S53Manufacturer
Amazon
PSU-EUHLK-PM01 (EU model)1Manufacturer
C/R/W/Y/G/W2Terminal block 6×11ED2613-ND

Front

NameDescriptionQtP.N.Link
PCBGerber_Front_202002280047271

Wall

NameDescriptionQtP.N.Link
PCBGerber_Wall_202002280048536
Pin header – male 2×1 – horizontal SMT6eBay

Backplate

NameDescriptionQtP.N.Link
PCBGerber_BackPlate_202002280051031
BME280Pin header – male 4×1 – horizontal SMT1eBay
BME280Pin header – female 4×1 – right angle1eBay
Pin header – female 2×1 – right angle6eBay
NutsM2.5 nuts or SMTSO (2mm height)4See “Other files” for SMTSO

Additional parts

NameDescriptionQtP.N.Link
Pi ZeroRaspberry Pi Zero W1Link
LCD3.5″Inch TFT LCD Touch Screen Module 320×480 SPI RGB Display for Raspberry Pi1eBay
SDKingston MicroSD card 16GB SDHC UHS-I CLASS 101Kingston
ScrewsM2.5 Philips pan head (NOT countersunk) (5mm length)4eBay
BME280Bosch BME280 5V 4-pin with below male header with pins coming out from the opposite side of the sensor.1eBay
Pin header – male right angle 4×11eBay
Pin header – male 2×2 (not soldered anywhere)1eBay

Videos

If below 2 videos are blocked please download them in a zip file.

Assembly
Assembled overview

Photos

If below 9 images are blocked please download them in a zip file.

Case without colours
Backplate: The 6 4×1 female headers at the corners should be 2×1 instead. The 4 nuts shown are soldered.
Detail of the join between 2 wall pieces and the front from the outside. Backplate in place.
Detail of the join between 2 wall pieces and the front from the outside. Backplate removed and cover flipped around (front down).
Detail of the join between 2 wall pieces and the front from the inside. A male 2×1 pin header is also soldered in place. The long edge of the wall pieces should be covered with solder to maximise strength.
Overall view of the inside of the cover.
Board connected with hidden connector and secured with the 4 screws. Sensor seen at the bottom.
Detail of the hidden connector. One screw is removed.
Bottom side of the board.

Testing & Approval

We will require extensive photographic evidence with at least 10 different photos of each board/assembly and one complete sample of each colour to be sent over to Athens, Greece before committing for the first batch so please add this to your quote.