Precision HMI solutions From concept to volumeGerman engineering Global support
Display Encoder 58200.0 s
200+patents
12Mparts a year
ISO 9001 · 14001certified plant
DigiKeystocked in the US
The problem
Most HMI suppliers sell you a catalog part. Then your team designs around it.
The reader is almost the right size. The contactless module reads most of your cards, but not the ones your biggest customer uses. So your engineers redesign around it and wait on answers.
With a typical catalog supplierNot ddm
01
Built for the catalog
Your product ends up fitting the supplier.
02
Slow answers
Technical questions sit in a ticket queue.
03
Stalled prototypes
Every iteration waits on the next sample.
04
No real partner
You're one order number among thousands.
"Almost" gets expensive. Here's how we work instead.
Three product families, designed and built in one plant. Each one is a platform we adapt to the machine it goes into.
01 · Contactless payment
Card and phone payment for EV chargers, kiosks and parking
Readers and tap-to-pay terminals that take EMV contactless, NFC wallets and RFID cards, plus motorized hybrid readers that can hold or return the card.CONFIRM
Each platform is already tested and in production. Pick the one closest to your machine and we adapt the bezel, the card mix and the host interface around it. Datasheets and 3D CAD are open, no email required.
P-01Contactless
Fig. 01 · 890
890 Combi Reader
Contactless payment, RFID and QR in one module
Standards
ISO 14443 A/B, MIFARE, NFC, EMV contactlessCONFIRM
ddm is the name on our readers. hopt+schuler is the family signature behind it: Jürgen and Rudolf Hopt founded the company in Rottweil in 1971, and it is still family-owned. Design, development and manufacturing share one site, so the people who design your reader also build it. Open offices and health and fitness programs are part of how the team works.
Brian and Pius lead ddm’s US sales team, providing straightforward guidance and on-site support. For technical questions, they bring in the engineering team in Rottweil.
Does the NEVI rule require a card reader on the charger?
Yes. 23 CFR 680.106 requires NEVI-funded chargers to accept contactless credit and debit card payment on the unit, with a secondary toll-free option. A contactless EMV reader on the charger is the practical way to comply. ddm's 890 combi reader and Gaga-Go 885 are built for this use.CONFIRM
Are ddm readers FCC certified?
Readers with RFID or NFC radios sold in the US carry FCC certification. Test reports are available on request for your own compliance file.CONFIRM
What card technologies do ddm readers support?
Contact chip (ISO 7816), magnetic stripe, contactless (ISO 14443 A and B, MIFARE, NFC phones and wallets), EMV contact and contactless, and QR on the 890. Hybrid models combine several in one slot.CONFIRM
How fast can I get samples?
Standard modules are in stock at DigiKey. Evaluation units direct from ddm ship within [__] business days with CAD and integration notes.CONFIRM
What is a motorized card reader and when do I need one?
A motorized reader pulls the card fully into the unit and can hold it during a transaction or retain it if the card is invalid. Use one for unattended payment kiosks, parking pay stations and casino ticket-in ticket-out, where a manual-insert reader would leave the card exposed.
What does a custom project cost and how long does it take?
It depends on how far the part moves from a base platform. Adapting a bezel, colors or the host interface typically takes [__] weeks. A new module takes [__] months from spec to production. Tooling and engineering costs are quoted after the first call, once we know the volume.CONFIRM
Who supports us after the design-in?
Your US contacts, Brian in Denver and Pius in Chicago, stay with the project and bring in the design team in Rottweil for anything technical. Firmware updates and revision notices come from the same people who built the reader.
Contact the US team
Tell us what you are building.
A few lines is enough. Brian or Pius will reply within one business day by phone or email, whichever you prefer, and are happy to come and meet you in person.CONFIRM
?
Only need samples?
Standard modules ship from DigiKey. Evaluation units come direct with CAD and integration notes.
