Stuff your 3D printer has made today...

[Dr.Al]

A while ago, I inherited this drill set (including the drills):

I can't think of any likely situations in which I'll need a 1/4" or 7/16" drill bit, but there are times when an 11.1 mm drill bit (which happens to be 7/16") could be handy as I don't have that size in any of my metric sets. To save me having to consult my big table, I printed this little holder for the drill set:

Two decimal places is probably a bit ridiculous for a drill bit, but I figured it didn't hurt. Ideally I would have made it a little bit smaller, but getting very small 3D-printable text can be a bit of a challenge without a nozzle change and I wanted to make life easy.

 

[Dr.Al]

There's something quite satisfying about coming home from work to find things sitting on the printer...

Today I got home to these:

and this:

The latter has a weird shaped hole to help wall-mount a corner chisel:

The former hangs on the front of my lathe and gives me somewhere to store the two sets of chuck jaws that aren't in the chuck at any point:

 

[DAPPH]

Printed off some bits for the mill.

Fine feed wheel, knobbly selector thing and droopy lever ball:
View attachment 339989

Y power feed handle:
View attachment 339991

Black stuff is PLA extrusion, grey stuff is SLA.

Now I just need to print something to clean up all the swarf and stuff I've made.

For steel try a toroidal magnet in a poly bag , drag , collect , hold over bin , put hand in bag, hold magnet , turn bag inside out over bin or drop bag in bin . For the rest I have an ancient VAX wet & dry cleaner , made a couple of extra dust bags out of a sq. mtr of thick denim and used strips off a 2 litre plastic milk bottle for the bag mouth reinforcing strips & zig zag sewed then in place so the sealing clip has a lip to hold on to .,

 

[DAPPH]

The later Citroen DS have a 3 dial dash. The speedo is marked in either mph or more commonly kph.
I have designed and printed a translucent ring which sits in the speedo hole, showing mph or kph.
I'm touring France soon, my speedo is mph, hence the need for a kph ring.
I used to swap over the speedo heads. I'm sure this would invalidate the insurance.
It took umpteen prototypes because at rest the needles point in different directions.
A niche product for the Dragon's Den, 'I'll take fifty quid for 100% of the design'.

View attachment 340947

I used to mark my speedo with a red china graph pencil till I got used to living in Germany , then the speed limits had etched the conversion in my head ..never had a ticket in Germany in the seven years I was there , nor on the many revisits & holidays afterwards.

I tried really hard not to laugh.
Sorry.

I didn't .

 

[Onoff]

Some thumbscrews in black PETG with little removable covers. Ordered some M5x16 A2 bolts to go in them. I popped the cover on and rubbed down on 120 then 80 grit wet and dry.

They're to hold some decorative cover panels on the gate pillars that cover the electrical boxes. Shape wise, a nod to the Celtic Cross stainless bits @MattH did me a while back:

 

[JMS1972]

Case for a DIY energy monitor. I'm still waiting for the ESP8266 wemo D1 mini board to arrive but I'm ready for it.

Printed in Prusa Orange PETG. I used my fastest settings so not too bad

 

[Dev]

Another mottram labs customer I see

What are you using for the code?

 

[bigegg]

Another mottram labs customer I see

What are you using for the code?

I realise this isn't addressed at me, but for the 4-ch ads1115 version, I used ESPhome via home assistant: the board connects via i2c, on GPIO pins 4+5.

The relevant part of the EspHome code, which is uploaded to the esp8266/weimos D1 mini:

i2c:
sda: 4
scl: 5
scan: true

ads1115:
- address: 0x48
continuous_mode: on
sensor:
- platform: ads1115
multiplexer: 'A0_GND'
gain: 2.048
name: "ADS1115 Channel A0-GND"
id: ads_sensor0

- platform: ct_clamp
sensor: ads_sensor0
name: "Current Sensor Channel 1"
update_interval: 1s
id: current_ch1
filters:
- calibrate_linear:
# Measured value of 0 maps to 0A
- 0 -> 0
# Known load: 7.73A
# Value shown in logs: 0.057A
- 0.057 -> 8.43
- platform: template
id: my_power_1
name: "Power Channel 1"
lambda: return id(current_ch1).state * 230.0 / 1000;
unit_of_measurement: 'kW'
update_interval: 1s

- platform: total_daily_energy
name: "Total Daily Power"
power_id: my_power_1

This is repeated for each subsequent sensor/board (up to 4 boards, 4 sensors per board)

 

[Dev]

Are you using STC013s? My code is similar but

filters:
- calibrate_linear:
# Measured value of 0 maps to 0A
- 0 -> 0
# Known load: 7.73A
# Value shown in logs: 0.057A
- 0.057 -> 7.73


edit: I calibrated using (what I thought) was a known load, but I'm wondering now if its right

 

[JMS1972]

Another mottram labs customer I see

What are you using for the code?

It's just esphome with a yaml I found on the web.

Current calibration is not quite there yet. This a stopgap until the slowboat delivers something better.

 

[Dev]

I#d be interesting in how whatever else are you're getting works out.

I have the 4 channel one and its pretty good. I didn't fancy starting to put split clamps on every circuit in my CU

 

[Onoff]

Last 6 posts...wtf?

 

[bigegg]

Are you using STC013s? My code is similar but

filters:
- calibrate_linear:
# Measured value of 0 maps to 0A
- 0 -> 0
# Known load: 7.73A
# Value shown in logs: 0.057A
- 0.057 -> 7.73


edit: I calibrated using (what I thought) was a known load, but I'm wondering now if its right

I *am* using stc-013s

They can be different, I believe, due to intolerances in the resistors - hence the need for calibrating?

I used my kewtech clamp on ammeter.

 

[bigegg]

Last 6 posts...wtf?

"Smart meters", but home made. Basically.

OBTopic: we are using 3d printers to print the cases.

 

[JMS1972]

I#d be interesting in how whatever else are you're getting works out.

I have the 4 channel one and its pretty good. I didn't fancy starting to put split clamps on every circuit in my CU

View attachment 344255

I wanted something that measures voltage too so have ordered one if these for the main feed.

PZEM-004T 3.0 Version Communication Module TTL Modbus-RTU AC Single Phase 100A | eBay

Communication module only, other accessories demo in the picture is not included! Its communication interface is RS485. 1 x Communication Module. Shell color: Green. Made of high quality electronic components, it is solid, durable and good performance, long service life.

www.ebay.co.uk

I'm hoping it can tell the difference between incoming power and exported power but we'll see...

 

[Dev]

There’s the 3D printed bits, to keep it legit…..

 

[Onoff]

There’s the 3D printed bits, to keep it leg…..

View attachment 344269

I remember looking into fire resistant filament a while back, bloody expensive!

 

[bigegg]

I remember looking into fire resistant filament a while back, bloody expensive!

TBF: I use UV resin, which is much less flammable than filament.

 

[Dev]

PLA and ABS don’t burn as much as melt.

 

[JMS1972]

I remember looking into fire resistant filament a while back, bloody expensive!

It's all low voltage, low power stuff so should be okay....